package com.dingding.aop;

import com.dingding.common.ServerException;
import com.dingding.common.TokenException;
import com.dingding.entity.BaseResponse;
import com.dingding.enums.ResponseCode;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.support.DefaultMessageSourceResolvable;
import org.springframework.validation.BindException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import javax.servlet.http.HttpServletRequest;
import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import java.util.stream.Collectors;

/**
 * 全局异常处理器
 *
 * @author Lion Li
 */
@Slf4j
@RestControllerAdvice
public class GlobalExceptionHandler {

    /**
     * 请求方式不支持
     */
    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
    public BaseResponse<Void> handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException e,
                                                                  HttpServletRequest request) {
        String requestUrl = request.getRequestURI();
        log.error("请求地址'{}',不支持'{}'请求", requestUrl, e.getMethod());
        return new BaseResponse(ResponseCode.FAILURE, "Method Not Supported");
    }

    /**
     * 拦截未知的运行时异常
     */
    @ExceptionHandler(RuntimeException.class)
    public BaseResponse<Void> handleRuntimeException(RuntimeException e, HttpServletRequest request) {
        String requestUrl = request.getRequestURI();
        log.error("请求地址'{}',发生未知异常.", requestUrl, e);
        return new BaseResponse(ResponseCode.SYS_EXCEPTION);
    }

    /**
     * 系统异常
     */
    @ExceptionHandler(Exception.class)
    public BaseResponse<Void> handleException(Exception e, HttpServletRequest request) {
        String requestUrl = request.getRequestURI();
        log.error("请求地址'{}',发生系统异常.", requestUrl, e);
        return new BaseResponse(ResponseCode.SYS_EXCEPTION);
    }

    /**
     * token过期
     */
    @ExceptionHandler(TokenException.class)
    public BaseResponse<Void> tokenException(Exception e, HttpServletRequest request) {
        String requestUrl = request.getRequestURI();
        log.error("请求地址'{}',发生系统异常.", requestUrl, e);
        return new BaseResponse(ResponseCode.TOKEN_EXPIRE);
    }

    /**
     * ServerException
     */
    @ExceptionHandler(ServerException.class)
    public BaseResponse<Void> serverException(Exception e, HttpServletRequest request) {
        String requestUrl = request.getRequestURI();
        log.error("请求地址'{}',发生系统异常.", requestUrl, e);
        return new BaseResponse(ResponseCode.SYS_EXCEPTION);
    }

    /**
     * 自定义验证异常
     */
    @ExceptionHandler(BindException.class)
    public BaseResponse<Void> handleBindException(BindException e) {
        log.error(e.getMessage(), e);
        String message = e.getAllErrors().stream()
            .map(DefaultMessageSourceResolvable::getDefaultMessage)
            .collect(Collectors.joining(", "));
        return new BaseResponse(ResponseCode.ARGS_VALIDATION_ERROR, message);
    }

    /**
     * 自定义验证异常
     */
    @ExceptionHandler(ConstraintViolationException.class)
    public BaseResponse<Void> constraintViolationException(ConstraintViolationException e) {
        log.error(e.getMessage(), e);
        String message = e.getConstraintViolations().stream()
            .map(ConstraintViolation::getMessage)
            .collect(Collectors.joining(", "));
        return new BaseResponse(ResponseCode.ARGS_VALIDATION_ERROR, message);
    }

    /**
     * 自定义验证异常
     */
    @ExceptionHandler(MethodArgumentNotValidException.class)
    public BaseResponse<Void> handleMethodArgumentNotValidException(MethodArgumentNotValidException e) {
        log.error(e.getMessage(), e);
        String message = e.getBindingResult().getFieldError().getDefaultMessage();
        return new BaseResponse(ResponseCode.ARGS_VALIDATION_ERROR, message);
    }


}
